Asymmetry induction mechanisms in helical polymers.

Helical polymers with switchable handedness constitute a unique class of dynamic chiral materials with significant potential in areas such as sensing, catalysis, and responsive systems. In this feature article, we provide a concise review of the principal mechanisms underlying asymmetry induction in these systems, highlighting how external stimuli, molecular design, and environmental factors govern helix sense control. Emphasis is placed on recent advances that enable reversible and controllable switching of helicity, offering insight into structure-function relationships and guiding the future development of adaptive chiral materials with targeted applications.